D > B enters the synchronized block, and since instance is not null at this time, it immediately leaves the synchronized block and returns the result to the program calling the method. E > At this point, thread B intends to use the Singleton instance, only to find that it has not been initialized, so an error occurs. Therefore, there is still the possibility of errors in the program. In fact, the running process of the program is very complicated. From this, we can see that it is more difficult and challenging to write programs especially in multi-threaded environment. We further optimized the program:
Helping "Ace to Ace" Variety Show Explodes
2. Product Class: Pizza as defined above is also an abstract class, and specific products are implemented by its subclasses.
《武侠世界》仗着广告和炒作，才有着现在的销量，不是我们《侠客》这样老牌杂志能比的。
一连串的悬念叠生，曲折复杂的案件接踵而至。黄浦江浮尸案、人体器官失踪案、药厂毒药案等几宗大案背后都与日本“黑龙会”有着神秘瓜葛……
胡家人则悲恸地故作姿态。
绝妙的遗产
督察尚垶原是警队明日之星，在一次行动中为救战友，不幸被匪徒一枪穿脑，经过抢救后奇迹生还，并且查案比以前更努力拼搏，赢得“铁探”的美誉。但尚垶饱受那次枪击的后遗症折磨，枪伤阴影、暴躁、甚至失禁。而总警司万晞华和Bingo之间神秘的关系，也让那次枪击的真相扑朔迷离。在警队的大升迁年，尚垶被迫卷入了警界高层权力相争的漩涡中。
他们与项羽，与西楚国的关系摆在那里，他们没有别的选择，只有与项羽，与西楚国共存亡这一条路可以走。
该剧通过上饶地区农村女人周英的坎坷而抗争的人生历程，展示了中国底层女性质朴、拼搏的秉性与命运。剧情从四个大方向讲述了自上世纪七十年代周英的婚婚恋史。少女时代的周英经历了初恋失败、梦想破灭、家庭巨变、嫁给福禄；少妇时代的周英经历了和福禄的艰难磨合、生死之交、先婚后爱、共同创业、患难真情、福禄病逝；最后讲述周英的成就，经历了事业成功、儿女成才、名声在外、丈夫背叛、回乡反思。通过晨曦的油菜花、正午的油菜花及月下的油菜花的反复特写，来衬托女主人公周英的人生境遇和精神境界。
? In this way, I directly entered the professional mode framing adjustment interface.
一得到消息，飞鸽传书便回到了洪都城里。
Crackle续订《偷拐抢骗 Snatch》第二季
Please note that you did not "take the initiative" to create orange juice. Orange juice was created by the beverage store, not you, but it also fully met your requirements and was even better than what you created.
这也正是尹旭千方百计保住刘邦的目的，此举是给了刘邦好大的便宜，甚至是养虎贻患。
但是没有想到令狐冲这时重伤发作，原来还剩半口气的，现在只剩下了三分之一口气了。
布拉格许愿墙前，5年未相见的韩国最大企业家之子现任检察官英宇（金民俊 饰），前来与在熙再续前缘。当年不辞而别，而又苦苦等待了5年，在熙能理解他的苦心吗？面对在熙倾心的尚炫，要怎样才能挽回在熙的心呢？
有眼光。
